Stamping and embossing press attachment



May 15 1928.

R. LANGE STAMPING AND EMBOSSING PRESS ATTACHMENT Filed May 23, 1925 3Sheets-Sheet 1 R. LANGE STAMPING AND EMBOSSING' PRES S ATTACHMENT Mai15, 1928.

Filed May 23, 1925 3 Sheets-Sheet 2 5 Sheets-Sheet May 15, 1928.

R. LANGE STAMPING AND EMBOSSING PRESS ATTACHMENT Filed May 23, 1925avwe/ntoz x? S: 3;; Z a o A 9 (III! \|\|.|l L a a M" A Patented May 15,19.28.

. yawn erhrES PATENT QFFIQE.

RICHARD LANGE, OF WEST HOBOKEN, NEW JERSEY.

Application filed May 23, 1925. Serial No. 32,319.

This invention relates to press attachments and has for its 'ObJQGt, theprovision of means for feeding stamping and emboss ing material as rollleaf, metal leaf and the like under predetermined conditions whichgovern the rate and extent of feed.

Another object includes the provision of a construction which is compactand selfcontained, so as to be readily handled and quickly transferredfrom one stamping press to another. I further place the feed rolls at anangle to the feed table, thereby providing an arrangement for readilythrea ing the strips of stamping material through the machine andcorrectly locating the same on the feed rolls.

A further object includes the provision of means for quickly adjustingwithout tools, the machine to vary the extent of stamping materialpulled by the respective feed rolls to suit the work at hand. Anotherobject embraces the provisionof a compact and entirely self-containedmachine which has comparatively few parts, is easily transported and iscomparatively cheap to manufacture and readily replaced. By myarrangement of the feed rolls a direct feed of the roll leaf, ormetallized leaf, is obtained thereby obviating trouble due to leafwrapping around and cut-angling in the rolls.

Other objects will appear hereinafter and I attain these objects by theconstruction illustrated in the accompanying drawings in which:

Fig. 1 is a plan view of a construction embodying the principles of myinvention.

Fig. 2 is a side elevation thereof showing the adjustment mechanism.

Fig. 3 is a view taken on the line 3--3 of Fig. 1.

Fig. 4 is a View taken on the line 4.-4 of Fig. 1.

Fig. 5 is a view taken on the line 5-5 of Fig. 1. r

Fig. 6 is a view in section showing the ratchet clutch.

Fig. 7 is a view showing a manner of tensioning the idler rolls and Fig.8 is a view taken on the line 8-8 of Fig. 4, looking in the direction ofthe arrows.

Like numerals refer to the same throughout the several views.

It among the prime purposes of my parts invention to provide a stampingand embossing'press attachment which is self-contained and wherein oneof the main features of construction provides means for feeding the rollleaf slowly and uniformly to the desired extent without damaging ortearing the carrier strips during the feeding operations. In knownmachines for feeding roll leaf or the like, the leaf is fed. with unevenor jerky motions, thereby causing the carrier strip to tear and causetrouble by catching in .the rolls. Even under the most favorableconditions the used strip has a tendency to tear because in the stampingoperations the die which-transfers the stamping medium from the carrierstrips to the article stamped has tendency to perforate the carrierstrip, thereby weakening-it greatly. Any uneven and sudden movements ofthe feed mecha nism accordingly will cause the weakened strips to breakand delay operations. It is evident therefore that a uniform slowfeeding mechanism is most desirable and gives the best results. I obtainthis desired feed motion by a special drive construction for the feedrolls whereby the feed rolls are driven independently of the stampingpress with which the attachment is operated. That is to say, the feedrolls are not driven directly from the press but are totally inde-,pendent thereof. For the purpose of driving the feed rolls any suitablemechanism may be used. In a preferred construction I utilize a torsionspring which is wound with the movement of the press platen and thetorsional stress of the spring is then utilized in causing the roll, orrolls, to advance at a slow and predetermined speed, which is controlledby a regulating governor or con trol device. This device may be anysuitable control mechanism, as a geared electric motor, or a suitablyplaced dashpot, or other means whereby the feed movement of the rolls isproperly retarded.- Illustrative of my invention, I have shown atorsionspring as the means for feeding the metallized strip a definite distancewith a slow and uniform pull and the governor or control device is anelectric motor which retards the return movement of the spring andtherefor also the control feed roll, or rolls, in the manner to bestated more fully herein-after.

motor 19.

in the accompanying drawings, the frame or bed plate is provided withinclined end arms 11 and 12 and with press attachment means in the formof a dove-tailed lug piece 13. The latter piece fits into a slot 14: onthe press frame 15 readily attaching the mechanism to any standard presssuited for using metallized roll leaf in ornamenting, stamping andembossing or the like. The arms 11 and 12 carry the mainor feed rolls 16and the idler rolls 52 together with the operative parts associatedtherewith. The

frame also carries the wind up plunger and regulator cup 18 and thegovernor or control The latter isconveniently supported on a cover plate20 which is removable for ready access to the retarding con trolmechanism 21, whichis shown in section by Fig." 4. This 'mechanismiscarried on the operatingijournal 22 which is suitablyheld in place bybearings 23 and 24-.

Journal 22 is also providedwith a head 25 which isfastened to the saidjournalby a pin 26. The journal head 25 is provided with a crank arm 27which engages the re winding plunger stem 28 ofplunger piston 29. Thisplunger operates in the dashpot in cup 18 and the stem extends throughthe floor of the bed plate in a bearing 30 tobe positively moved upwardsby the press platen (not shown) 1 to wind up the torsion spring 31 foroperatingthe teed rolls. A set screw 32 provides means for properadjustment between the press platen and the i the journal 22 by a pin38.

plunger stein. One'endot' spring 31 is fastened onto the casing and theother is tastened onto a sleeve 33 which is secured to This arrange mentcauses spr1ng31 to be tensioned or wound up when the plunger 28 israised. It

r is evident that without a retarding device "and 40"; The amount ofadvance for each the head25. and 2, such a the return of the torsionspring 31 and head. i

roll is dependent upon the length 01: cord pull and thislength is-variedby the position on a the pull arm 35.

The cords 39 pass over the pulleys 4C1 on the outer roll and the end ofeach cordis fastened to the individual roll sleeve 12; which is rotatedby the pull of the cord against the tension of a suitable spring 43within the roller sleeve. One end of this sleeve is carried on a bearing4 1 and row, the ball will remain ine'itective.

ings 49 the 1 roll.

strip is thus controlled as strip feed and therate at which it is adtheother end has an enlarged head containing a noiseless ratchet clutch 15.This clutch comprises a )lurality of clutch balls 16 which are held y aspring 47 inoperative position. While the head is rotated counterclockwise in the direction of the ar- When, l'lQWQVGI, the motion isreversed, the balls will ride up the incline plane in the head and gripon the outer surface thereby locking the sleeve and its attachedroll 16against rotation in that direction. The feed rolls 16 are supported inthe frame arms 11 and 12 and the manner best shown in Figs. 1 and 5. Inthe 1 construction shown three full rolls are. provided, but obviouslythe number of rolls employed may. vary to meet required or desiredneeds. of these rolls is alike and therefore a de- SCl'lPillOl'l of oneof the rolls will suffice.

The roll body 16 is companion roll 52 which is here shown as an idler.Ajournal 18 is provided with bearresponse to the pull and in thedirection stated above. An end clutch 51 similar in consiruction to itscompanion clutch 45, but oppositely placed, controls the directionotpendent rotation of each feed roll in the same direction, which ishereln counter-clockwise,

and on whichthe roll rotates in.

This construction permits inde-" The construction. 1

knurled to positively grip the roll leaf in conjunction with its tothereby advance the leaf roll witn each return or downward movement ofthe plunger 28. As each roll is controlled by its own and thelength ofpull depends pull cord cordi end on the upon the position of the feedroll arm, it is evident that each roll to the length of vanced or ted. ii

The companumroll 52 is pivotally held on a rocker armj53 and rstensionedto grip the leaf roll by means of a tension spring 54, the free end ofwhich is hooked on a finger ice 55 project-ingt'rom the frame arm 11 atone end and from the frame arm 12at the other.

This provision gives a'positive grip on the paper of the leaf strip andthe relative positions oil the two companion rolls (16 -52) allows thetree used end of the leaf roll to fall awaycfrom the attachment, Thisisa great advantage as the free or broken ends of the leaf roll arccfreeto drop down and do not get caught inthe companion rolls.

As stated above, in order to provide for the desired slow or retardedpull of the rolls on the roll leaf, a brake device is provided and thisbrake device controls the return or unwinding otthe operative spring.Any

suitablemechanism which will retard the return motion of the spring 31and thus providea steady pull willsuflice. In a pre ferred form,IhaveshownI a motor governor or retarding device 19 which is conveniently.22 to rotate and wind roses-"1r attached directly ,onto the plate 20. Abush ing '60 in plate 20 is provided for the motor drive axle 61. Themotor drive axle carries the reduction gear 61", which operates gears 62on the bevel gear 62 of known construction, .and provides means forreducing the rate of rotation in proper ratio of the motor axle and thesleeve gear 63, which is driven from gear 62. The sleeve gear 63 isloosely mounted on sleeve 64, which is carried freely on the journal 22.On the flange of the sleeve gear 63 there is secured by suitable means,as a key 63 the silent ball clutch 45, which is surrounded by thejournal hub extension 65 and is secured to the journal 22 by a pin 80.The operation of the retarding construction (see Figs. 3, 4, and 8) isas follows:

When the printing impress made, the printing platen (not shown) strikesthe lower end, or set screw 32 of plunger 28, and by pushing up thisplunger, causes journal up spring 31. The plunger 28 and arm 27 willthen assume the position shown in Fig. 3 and by reason of .the springtension will unwind or move in the direction indicated by the outerarrow in Fig. 8. The rate of the unwinding will be controlled by themotor through the retarding gears and the clutch about as follows: Theretarding sleeve gear 63 and the clutch 45 being united will rotate inunison in the direction indicated by the arrows on the clutch (Fig. 8)and the rate of rotation will be constant and controlled by that of themotor. Since spring 31 is wound up the shaft 22 and its hub extension 65will tend to move also in the direction of their arrows, but because ofthe clutch balls 46, the shaft and hub extension cannot over-ride theballs or rotate faster than the sleeve gear and clutch. The speed of themotor there fore controls the speed of the return motion of shaft 22,its head 25, the pull arm 35 on the head, and of course, also the pullcords 39 and the respective feed rolls 16.

The motor shaft 61 also carries at its end a bevel gear 67 which mesheswith a sleeve gear 68. The latter gear is fastened onto the sleeve shaft64, which is loosely mounted in journal 22. The sleeve shaft 64- isfurther provided with a standard type of friction clutch 69 forautomatically operating the contact device 7 0 of known cam structure,on journal 22, whereby the motor circuit (not shown) is automaticallyclosed during the return motion of journal 22, so that the motor is inoperation only during the return motion of the journal 22, and itsconnected head 25 and arm 35.-

While I have shown and described my iii-- vention as being embodied in aspecific construction for the purpose of illustrating the same, I do notthereby desire to be understood as thus limiting myself unduly, asvarious modifications falling wholly within the'spirit and scope of myinvention will suggest themselves to those versed in the art. I

lVhat I claim therefore as new and useful of my own invention and desireto secure by Letters Patent is: I

1. In a stamping and embossing attachment, means for gripping transfermaterial for advancing the same in accordance with the required needs,means for imparting potential energy to said gripping means and meansfor liberating said potential energy in timed relation to advance thetransfer material a predetermined distance.

2. In a stampingand embossingattachment, means for engaging transfermaterial to advance the same predetermined distances, means for storingenergy to impart the same to said transfer engaging means, and means tocontrol said imparted energy to advance the transfer materialpredetermined distances.

3. In a stamping and embossing attachment, a plurality of transferengaging members, tensioning means associated with said members forstoring energy, means for placing under tension said tensioning meanswhereby said transfer engaging members are caused to be rotated in timedrelation to advance the transfer materials at varying distances.

4. In a stamping and embossing attachment, a plurality of transferengaging members each of said members being adapted to engage a transferstrip, and means for advancing each strip a predetermined distance at avarying rate of speed.

5. In stamping and embossing attachment, a transfer engaging rolladapted to engage a plurality of transfer strips to advance said stripsa uniform distance and means including a spring to cause said roll to bedriven by the potential energy of said. spring for advancing saidstrips.

6. In a stamping and embossing attachment, a plurality of transferengaging members, each adapted to engage its transfer strips and meansincluding a tensioned spring to cause said vstrips to be advanced slowlyat definite intervals.

7. In a stamping and embossing attachment, the combination of a transferadvancing roll, a frame for said roll, a tensioning member associatedwith said roll, means for winding said tensioning member while said rollis held stationary, and means for controlling the release of saidtensioning member to slowly advance said roll a definite distance.

8. In a stamping and embossing attachment, the combination of aplurality of transfer rolls to advance transfer strips, 2. frame forsupporting said rolls at an angle to the horizontal, a pull cord foreach roll to permit adjustment of said roll to the extent thatthe rollwill be permitted to ad- Vance said strips;

9. In a stamping and embossing attachment, the combination of aplurality of transfer rolls to advance transfer strips, a frame forsupporting said rolls at an angle to the horizontal, a drum for eachroll, a pull cord for each drum, a tension member in said drum forcausing rotation of said drum in. one direction, clutch members on saidroll to control the rotation of said drum,

to said drum for and a pull cord attached associated roll tospacedrolls, a frame for supporting sai rolls at an angle to thehorizontal, a jour-' spring on saidv means for tBIlSlOIllIlg said powerhad in said frame, a power ]ournal,

spring, and means to control said tensioned power spring to release thesame slowly and to thereby cause the strip to be advanced slowly anduniformly.

1 2. In a press attachment, a plurality of spaced rolls, a frame forsupporting said rolls at an angle to thehorizontal, ajournal in saidframe, a power spring on said journal, means for tensioningsaid powerspring, an electric motor and brake clutches to control the release ofsaid power spring.

18. In a stamping and embossingattachment, the combination ofa pluralityof transfer rolls to advance-transfer strips, a

frame for supporting; said rollsat an angle 1 to the horizontal, a drumfor each roll, a

member on said roll, a power member for said drum memher to advance thetransfer strip a predetermined distance, and a governor to control therate at which said roll is advanced. 9

A 14-. In a press attachment a plurality of for supporting said spacedrolls, a frame rolls at an angle to thehorizontal, a 1ournal in saidframe, a power spring and a control mechanism on said journal, means toten-X SlOIl said power spring and a motor to be placed into and out ofoperation ,by said d' control device.

In testimony whereof have hereunto set my hand on this 11th day ofMay,"A. D

1925. i u i l v RICHARD LANGE;

drum for advancing said'

